Lithium-Rich Cobalt-Free Manganese-Based Layered Cathode Materials for Li-Ion Batteries: Suppressing the Voltage Fading
Abstract
:1. Introduction
2. Materials and Methods
2.1. Preparation of Li1.2Ni0.2Mn0.6O2 Nanoparticles
2.2. Material Characterization
3. Results
3.1. Structure and Composition
3.2. Morphology
3.3. Electrochemical Properties
4. Discussion
4.1. Structural Stability
4.2. Voltage Decay
5. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Sample | Li | Ni | Mn | Al |
---|---|---|---|---|
Pristine | 1.18 | 0.21 | 0.59 | - |
AlF3-coated | 1.20 | 0.19 | 0.61 | 0.048 |
Crystal Data | Pristine LLNMO | AlF3-Coated LLNMO |
---|---|---|
a (Å) | 2847(3) | 2852(1) |
c (Å) | 14,216(6) | 14,235(0) |
V (Å3) | 99.82 | 99.97 |
c/a | 4.992 | 4991 |
I(003)/I(104) | 1.41 | 1.45 |
(I(006) + I(102))/I(101) | 0.42 | 0.41 |
Coherent length (Lc) (nm) | 68 | 65 |
Strain × 10−2 | 2.45 | 2.12 |
Reliability factors | ||
Rw (%) | 6.22 | 7.55 |
Rexp (%) | 4.71 | 6.23 |
Ni2+ (in Li layer of Rm) | 0.0133 | 0.0125 |
Phase fraction (mol %) | ||
Rm | 48.2 | 49.5 |
C2/m | 51.8 | 50.5 |
Sample | BET (m2 g−1) | LBET (nm) | LTEM (nm) | Pore Size (nm) | Pore Volume (cm3 g−1) |
---|---|---|---|---|---|
Pristine | 11.5 | 115 | 150 | 4.6 | 0.45 |
AlF3 coated | 9.2 | 144 | 180 | 5.2 | 0.49 |
Sample | Rs (Ω) | Rct (Ω) | CPEct | σw (Ω s−1/2) | DLi (cm2 s−1) | |
---|---|---|---|---|---|---|
T | p | |||||
pristine | 8.4 | 100.3 | 2.6 × 10−5 | 0.91 | 40.5 | 2.8×10−15 |
AlF3 coated | 9.1 | 65.5 | 4.8 × 10−6 | 0.94 | 34.6 | 1.1×10−14 |
Material | ΔV per Cycle (mV) | Measurement Conditions | Ref. |
---|---|---|---|
Al3+ doping | 3.50 | 2.0–4.8 V, 100 cycles @ 25 mA g−1 | [26] |
Nb5+ doping | 2.61 | 2.0–4.8 V, 100 cycles @ 0.1C | [114] |
pristine (sol-gel) | 1.07 | 2.0–4.75 V, 200 cycles @ 0.2C | [11] |
pristine (co-precipitation) | 1.25 | 2.0–4.75 V, 200 cycles @ 0.2C | [11] |
pristine (hydrothermal) | 0.75 | 2.0–4.75 V, 200 cycles @ 0.2C | [11] |
Li2ZrO3 coating | 1.25 | 2.5–4.5 V, 100 cycles @ 1C | [13] |
Li1.3Al0.3Ti1.7(PO4)3 coating | 4.68 | 2.0–4.75 V, 80 cycles @ 0.2C | [29] |
pristine (co-precipitation) | 6.42 | 2.0–4.8 V, 100 cycles @ 0.2C | [14] |
LiAlO2 coating | 3.31 | 2.0–4.8 V, 100 cycles @ 0.2C | [14] |
pristine (co-precipitation) | 7.16 | 2.0–4.75 V, 50 cycles @ 0.2C | [43] |
ZnAl2O4 coating | 5.26 | 2.0–4.75 V, 50 cycles @ 0.2C | [43] |
N-doped carbon coating | 1.09 | 500 cycles @ 5C | [115] |
pristine (hydrothermal) | 2.80 | 2.0–4.8 V, 50 cycles @ 0.1C | this work |
AlF3 coating | 1.40 | 2.0–4.8 V, 50 cycles @ 0.1C | this work |
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Abdel-Ghany, A.; Hashem, A.M.; Mauger, A.; Julien, C.M. Lithium-Rich Cobalt-Free Manganese-Based Layered Cathode Materials for Li-Ion Batteries: Suppressing the Voltage Fading. Energies 2020, 13, 3487. https://doi.org/10.3390/en13133487
Abdel-Ghany A, Hashem AM, Mauger A, Julien CM. Lithium-Rich Cobalt-Free Manganese-Based Layered Cathode Materials for Li-Ion Batteries: Suppressing the Voltage Fading. Energies. 2020; 13(13):3487. https://doi.org/10.3390/en13133487
Chicago/Turabian StyleAbdel-Ghany, Ashraf, Ahmed M. Hashem, Alain Mauger, and Christian M. Julien. 2020. "Lithium-Rich Cobalt-Free Manganese-Based Layered Cathode Materials for Li-Ion Batteries: Suppressing the Voltage Fading" Energies 13, no. 13: 3487. https://doi.org/10.3390/en13133487